Yaskawa MP920 User's Manual Design - Manual (Page 509)

12.3 Motion Errors
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12.3 Motion Errors
This section describes the details and remedies for errors that occur in motion functions.
12.3.1 Description of Motion Errors
Motion errors in the MP920 are classified as alarms detected in motion programs and axis
alarms detected in SERVOPACK units.
The failure location can be determined and appropriate corrections can be taken simply by
checking the contents of the alarm output register set from the Define Group Screen for
motion program alarms and the contents of monitor parameter: Alarms (IL††22) for axis
alarms.
12.3.2 Processing Flow When a Motion Error Occurs
„ Troubleshooting Flow
The following illustration shows the troubleshooting flow when a motion error occurs.
START
Yes
System error
NO
YES
Motion progarm
alarm
No
Yes
No
YES
NO
YES
Axis alarm
NO
All LEDs on the MC
Module as well as ERR
and ALM LEDs lit?
H01 Screen display
Axis alarm has occurred.
Group alarm has occurred.
Motion control
ladder used?
Go to 12.2.2 Processing
Flow When a System
Error Occurs.
Display alarm output register
contents. (Display HEX (H)
on the register list.)
Determine the cause from
the alarm code.
See the List of Alarm Codes.
Display monitor parameter:
Alarm (IL 22).
Determine the cause from
alarm bits.
Alarm occurred?
Axis alarm
occurred?
Alarm output register
= 0
Axis alarm present
(IL 22 = 0)?
No alarm
No alarm
= 0
≠ 0
System error